This is the Trueblood swashplate leveler for the T-Rex 600 helicopters and will fit the new Ultralight Extreme 3D Edition swashplates. A perfectly level swashplate is one of the most important factors in having your helicopter fly straight and handle well. This handy tool makes it easy to check and set your swashplate alignment at all points of collective travel from full negative to full positive and all points in between. Using the leveler you can easily adjust out most of the interactions inherent in all eCCPM systems. With this tool and a few moments time your heli will lift straight off on it's maiden flight and will track better through all flight maneuvers!